From: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date: Thu, 25 Jun 2009 09:27:12 +0000 (+0200)
Subject: perf_counter: Rework the sample ABI
X-Git-Tag: v2.6.31-rc2~30^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e6e18ec79b023d5fe84226cef533cf0e3770ce93;p=pandora-kernel.git

perf_counter: Rework the sample ABI

The PERF_EVENT_READ implementation made me realize we don't
actually need the sample_type int the output sample, since
we already have that in the perf_counter_attr information.

Therefore, remove the PERF_EVENT_MISC_OVERFLOW bit and the
event->type overloading, and imply put counter overflow
samples in a PERF_EVENT_SAMPLE type.

This also fixes the issue that event->type was only 32-bit
and sample_type had 64 usable bits.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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